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单词 footlambert
释义

footlambert

noun

foot·​lam·​bert ˈfu̇t-ˌlam-bərt How to pronounce footlambert (audio)
: a unit of luminance equal to the luminance of a perfectly diffusing surface that emits or reflects one lumen per square foot

Word History

First Known Use

1915, in the meaning defined above

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更新时间:2024/11/13 10:09:07